Hlukanisa ama-screw extractors nge-shank eyisikwele. Ukuze uthole indlela elula esheshayo yokususa izikulufu eziphukile, amapayipi, amabhawodi nezikhonkwane. HRC50-52. Ifanele ukusetshenziswa ngemicu yomibili njengewashi nephambene newashi.
| Ngembobo yokubhoboza mm | Isisindo g |
| 7MM(5/16'') | 52 |